Well-casing machinery.



1.0. HARVIE.

WELL CASING MACHINERY. APPL-ICATION FILED JUNE 22,1916.

1,1 9?,28'7. Patented Sept. 5, 1916.

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jlt m i t l a JACOB O. HARVIE, 0F CHEYENNE WELLS, COLORADO.

WELL-CASING MACHINERY.

Application filed June 22, 1916.

To all whom it may concern:

Be it known that I, JAcoB O. HARVLE, a citizen of the United States ofAmerica, residing at Cheyenne Wells, in the county of Cheyenne and Stateof Colorado, have invented certain new and useful Improvements inWell-Casing Machinery, of which the following is a specification.

This invention relates to devices for perforating and cleansing theinteriors of wellcasings and its object is to provide a simple andinexpensive structure which will not only remove projections andexcrescences from the interior surfaces of well-casings, but will cut aplurality of slits in the wellcasing adjacent the bottom thereof. It istherefore possible to restore the flow of water to a well-casing'whichhas become clogged by rust, sand or the like.

Further objects and advantages of the invention will be set forth in thedetailed description which now follows.

In the accompanying drawing, Figure 1 is a side elevation of one form ofthe perforator; Fig. 2 is a like view of a modified form thereof; andFig. 3 is a perspective view of one of the rasps used for removingprojections from the interior of the casing.

ike numerals designate corresponding parts in all of the figures of thedrawing.

Referring to the drawing and particularly to Fig. 1, 5 designates a rodhaving bolts 6 and 7 passing laterally therethrough. Bowed saw-blades Sand 9 have their upper and lower ends supported by the bolts 6 and 7respectively. Springs 10 and 11 surround said bolts and normally tend tothrust the saw-blades outwardly. It will be noted that the teeth 12 ofthe saw-blades are disposed outwardly for a purpose hereinafter setforth.

In the form of the device illustrated in Fig. 2, saw-blades like thoseshown in Fig. l are employed but in this case the supporting member 5 isa tube instead of a rod and the springs 10, 11 are disposed upon bolts6, 7 inside of the tube 5 and bear directly between the ends 8 9 of saws8 and 9 These saws are movable toward and from each other through slots5 formed in the wall of the tube 5*. Instead of the saws 8 and 9 or 8and 9 I may employ bowed rasps such as are illustrated in Fig. 3. Theserasps serve to remove any projections or excrescences which may existupon the Specification of Letters Patent.

Patented Sept. 5, 1916. Serial No. 105,203.

inner surface of the well-casing, while the saw-blades serve to cutslits through the well-casing adjacent the lower end thereof toreestablish any How of water which may have been cut off by theaccumulation of rust, sand, mud or the like.

It is to be noted that the supporting mem bers 5 and 5 are adapted foruse with either the saw-blades or the rasps.

While the elements shown and described are Well adapted to serve thepurposes for which they are intended, it is to be understood that theinvention is not limited to the precise construction set forth, butincludes within its purview such changes as fairly come within thespirit of the appended claims.

I-Iaving described my invention, what I claim is:

1. A device of the character described, comprising a support and abowed, yieldingly mounted cutting member carried thereby.

2. A device of the character described, comprising a support and aplurality of bowed, yieldingly mounted cutting members carried therebyand projecting radially therefrom.

3. A device of the character described, comprising a support and aplurality of yieldingly mounted bowed members carried thereby havingsaw-teeth upon their convex faces.

4. A device of the character described, comprising a support havingbolts passing laterally therethrough, bowed saws mounted for movementtoward and from each other upon said bolts and springs normally tendingto force said saws outwardly.

5. A device of the character described, comprising a tubular supporthaving slots in its walls, bowed saw-blades having their ends disposedinside of said tubular support and their convex faces disposed outwardlythereof, and springs within the tubular support and bearing between theends of said saws and normally tending to force them apart.

In testimony whereof I aflix my signature in the presence of twowitnesses.

JACOB O. HARVIE.

Witnesses:

C. O. SEARS, MATTIE 'IRIMBLE.

copies oi this patent may be obtained. for five cents each, byaddressing the Commissioner of Eatents,

' Washington, D. G.

